changing hardcoded homedir in Config.pm

I have two shell accounts that share a common perl lib dir. Each have
their own siesta/siesta.conf. I ran nacho and discovered that nacho
under the my "second" shell was pointing to the "first" siesta.conf. The
culprit? Config.pm has hardcoded directory paths. I changed mine to use
$HOME by default, so that multiple users can share a single installation:
http://dwelle.org/eg/Config.pm.patch
-- Bowen